- 3 rounds ignition is devestating for teams that dont run healers.

- The abovementioned applies for the 2 rounds chaos.

- Full immunity makes it impossible to cc him. So ppl are force to kill him fast or suffer rounds of cc.

- Itachi is strong when ppl built a team around him. If you worry about him dying too quick have Danzo ready. Or invest more into power.

- By the anime logic, everyone should run vanila Naruto. That guy is practically immortal and will win any fight with anyone.